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possible extinction

...A subspecies, the Cuban ivory-billed woodpecker (
Campephilus principalis bairdii), was last officially sighted in the late 1980s and is believed to be extinct. A related species, the
imperial woodpecker (
C. imperialis) of Mexico, is the largest woodpecker in the world. It is critically endangered and possibly extinct. All these birds appear to require large trees...

...that the bird had been sighted in eastern Arkansas. A subspecies, the Cuban ivory-billed woodpecker (
C. principalis bairdii), is thought to be extinct, and a related species, the
imperial woodpecker (
C. imperialis) of Mexico, is critically endangered and possibly extinct.

...and sturdy and thus are difficult to kill. Unfortunately, this has not saved the magnificent, highly specialized ivory-billed woodpecker (
Campephilus principalis) and its close relative the
imperial woodpecker (
C. imperialis), the largest of all woodpeckers, from near extinction through destruction and modification of habitat. By the early 21st century, the ivory-billed...